%0 Journal Article %A M. A. Naimark %T On isomorphic representations of rings and groups %J Doklady Akademii Nauk %D 1961 %P 278-281 %V 137 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_137_2_a7/ %G ru %F DAN_1961_137_2_a7